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Old 01-06-2011, 09:32 AM   #1
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Question rootfs and /dev/root on /?


Here's what "mount" says in a uClinux appliance:

rootfs on / type rootfs (rw)
/dev/root on / type yaffs (rw)
proc on /proc type proc (rw)
ramfs on /var/tmp type ramfs (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw)
usbfs on /proc/bus/usb type usbfs (rw)
securityfs on /sys/kernel/security type securityfs (rw)
Does someone know why "/" is mounted twice?

And I'd like to double-check that the other entries, which don't contain a physical device as source are indeed just kernel data structures.

Thank you.
Old 01-06-2011, 09:40 AM   #2
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The others are just kernel (or RAM)- mounted filesystems.

I'd like to know the answer to your first question too.
Old 01-07-2011, 06:13 AM   #3
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Thanks for the tip. Are those RAM-based filesystems created when compiling the kernel, and are those keywords, ie. reserved names? It seems like we could also use "none":

Google reports / mounted twice occuring with embedded Linux. Maybe it's necessary when using flash memory instead of a hard-disk.


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